There is only limited evidence that mild to moderate arterial hypertension or fluctuations in blood pressure cause headaches. This is according to a 2013 study published in the Iranian Journal of Neurology. The American Heart Association also affirms this claim, asserting that headaches cannot be caused by high blood pressure unless there is a hypertensive crisis.
An individual experiencing a hypertensive crisis has a sudden spike in their blood pressure, often exceeding 180/120 mm Hg. As a medical emergency, hypertensive crisis can result in strokes, heart attacks, or other life-threatening illnesses.
An increase in skull pressure leads to a headache that feels very different from typical headaches. Aspirin and other headache treatments will be ineffective in managing such a condition.
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